$@dream$

`1,` You’d better use showers instead of baths.

`->` should do sth (nên làm gì) `=` 'd better `=` had better do sth (tốt hơn nên làm gì)

`2,` Despite the cheap hydro power, it is sometimes limited.

      Despite the fact that hydro power is cheap, it is sometimes limited.

`->` Even though/ Although/ Though + S + V, S + V

`=` Despite/ In spite of + N/ N phrase/ V-ing, S + V.

`=` Despite/ In spite of + the fact that + S + V, S + V.

`->` Câu trên dùng N phrase 

`3,` She needs to finish the project on some alternative sources of energy soon.

`->` It + to be necessary + for O + to V... (cần thiết với ai để...)

`=` S + need + to V (Ai đó cần...)

`4,` Unless you turn off the lights before leaving the room, you will waste electricity.

`->` Unless `=` If not

`->` Câu điều kiện loại 1: 

If + S + do/does + not + Vinf, S + will/ can/ may/... + Vnguyên thể.

`=` Unless + S + Vs/es, S + will/ can/ may/... + Vnguyên thể.

`5,` Nuclear power is more dangerous than solar.

`-` safe (adj): an toàn `><` dangerous (adj): nguy hiểm

`-` So sánh hơn:

S + to be + adj-er + than + P/ N.

S + to be + more + adj + than + P/ N.

$\textit{1,}$

You'd better use showers instead of baths

- S + had better + V nguyên: nên

$\textit{2,}$

Despite being cheap, hydro prower is somtimes limited

- In spite of/Despite + Noun/Ving : mặc dù

$\textit{3,}$

She needs to finish the project on some alternative sources of energy soon
- necessary: cần thiết

- need to V (nguyên) : cần

$\textit{4,}$

Unless you turn off the lights before leaving the room, you won't waste eleectricity

- Unless = If...not = trừ khi

$\textit{5,}$

Nuclear power is not as safe as solar

- as.....as: so sánh bằng 

- more + adj/ adj+er : so sánh hơn kém